{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["compare", "used for", "part of", "conjunction"], "input": "We present a practically unsupervised learning method to produce single-snippet answers to definition questions in question answering systems that supplement Web search engines ."}
{"compare": [], "used for": [{"subject": "unsupervised learning method", "object": "single-snippet answers"}, {"subject": "question answering systems", "object": "Web search engines"}], "part of": [], "conjunction": []}